- 专利标题: METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET
-
申请号: EP20795076.7申请日: 2020-01-17
-
公开(公告)号: EP3943203A1公开(公告)日: 2022-01-26
- 发明人: SHIMOYAMA Yusuke , SHINGAKI Yukihiro , ZAIZEN Yoshiaki , YAMAGUCHI Hiroi
- 申请人: JFE Steel Corporation
- 申请人地址: JP Tokyo 100-0011 2-3, Uchisaiwai-cho 2-chome Chiyoda-ku
- 代理机构: Haseltine Lake Kempner LLP
- 优先权: JP2019081033 20190422
- 国际公布: WO2020217604 20201029
- 主分类号: B21B3/02
- IPC分类号: B21B3/02 ; C21D8/12 ; C22C38/00 ; C22C38/06 ; C22C38/60 ; B21B1/22 ; H01F1/147
摘要:
A method for producing a non-oriented electrical steel sheet used as an iron core material for a motor or a transformer and having excellent magnetic properties comprising subjecting a raw steel material having a component composition comprising, by mass%, C: not more than 0.005%, Si: 1.0 to 5.0%, Mn: 0.04 to 3.0%, sol. Al: not more than 0.005%, P: not more than 0.2%, S: not more than 0.005%, N: not more than 0.005% and the remainder being Fe and inevitable impurities to a hot rolling to form a hot-rolled sheet, subjecting the hot-rolled sheet to a hot-band annealing and to a single cold rolling or two or more cold rollings including an intermediate annealing between each rolling to form a cold-rolled sheet having a final sheet thickness and subjecting the cold-rolled sheet to a finish annealing, in which at least one pass in the final cold rolling of the cold rolling is a rolling at a friction coefficient µ of not less than 0.030 and a rolling reduction of not less than 15%.
公开/授权文献
- EP3943203B1 METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET 公开/授权日:2024-09-11
信息查询